Partnering with experienced investors can also provide guidance.

Sounds like you all area experiencing it as well. 

Hence I am staying  away Hi Kasi,I reviewed our information in SF as we document everything and found where you contacted our company. 

Not sure what you've experienced, but we've found many contractors at Home Depot. 

Would love any insights or advice from experienced real estate investors!

There is some info here: https://yieldtalk.com/iintoo-review/.

But, I never used them before for civil engineering and architectural work.My question to any experienced investors is please suggest what is the best route to go about this project ?

In fact, I would want to go even lower because there's a very good chance some damage is hidden and costs will run higher than anticipated.If you aren't experienced, I recommend you just buy the good apple. 

Check out this recent thread on LLC’s, it’s pretty eye-opening that of all the very experienced investors on here, with centuries of investing experience combined, the consensus was that LLC’s are not needed for most investors:  https://www.biggerpockets.com/forums/926/ Of course gurus will tell you that you need one before you even have a single property, because it makes them sound smart.

Attorney.An experienced real estate attorney that works with investors....